1) open dashcode and select “custom”2) under test and share select 10.4.0 backward-compatibility (under options)3) name the widget Youtube embed4) click “save to disk”5) save the widget to your desktop6) right click on your widget and select show package contents7) open main.html with your text editor and replace all the html code in main.html with:

YouTube Video Embed Beta

save the file and close the widget folder – drag and drop into your iBooks HTML container, enjoy ;3

I have HTML5 CSS3 Canvas Javascript animations, complex calc javascript and a whole host of other things using this simple process of modifying a widgets base files. Its really pretty slick.